Car-brake



(No Model.)

' G. L. ADAMS.

GAR BRAKE. A No. 347,911. Patented'Aug. 24, 1886.

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UNITEDv STATES PATENT Prion.

GILBERT LLOYD ADAMS, OF ALTOONA, PENNSYLVANIA.

CAR-BRAKE.

SPECIFICATION forming part of Letters Patent No. 347,911, dated August 24, 1886.

Y Application filed February 8, 1886. Serial No. 19H61. (No model.)

To all whom it may concern:

Be it known that I GILBERT LLOYD ADAMs, of Altoona, inl the county otl Blair and State of'Peunsylvania,have invented anew and useful Improvement in CarBrakes; and Iv hereby declare the following to be a full and clear description thereof.

This invention relates to an improved operating mechanism for the car-brake described and claimed by me in Patent No. 326,191, of September 15, 1885.

The specific invention relates to improve-l ments in the coupling attachments for the coutiguous ends of the operating levers by means ot'plates in lieu of rings and links, thus securing the said levers from dropping down by accident, and also to an improved device for coupling the actuating-lever to the operatinglevers, by means of which improvement I am able to dispense with one of the actuating-levers I formerly employed.

The invention will be readily understood by reference to the accompanying drawings, of which- Figure l is a general plan of' a car-truck, showing the improved brake attachments. Fig. 2 is a longitudinal sectional elevation of the same. Figs. 3, 4, and 5 are detail drawings of brake parts.

The truck shown has the ordinary freightcar construction, showing a bolster, A, and a spring-bar beam, A. To the sides ofthe beam A', near its bottom edge, is secured a fulcrumblock, D-one on each side of the beam, thus forming a pair-and each end of the beam carries a similar pair, thus forming suitable fulerums for four operating levers, G, the lower end of eachof which carries a brake, H, as in my former patent above alluded to. The longer ends of the operating-levers are engaged with and moved by a single actuating-lever, E, in lieu of a pair of such levers, as in my saidxformer patent. The contiguous ends of each pair of the said operating-levers are coupled to a central transverse plate, I, respectively, by a link-plate or pair of linkplates, I', as shown clearly in Fig. 1, thus obviating the liability of either ofthe levers dropping down so as to endanger serious accident'to the train in case of any breakage of the links or rings shown l'or the connection of these levers in my said former patent, for in this improvement the parts I, l', and G constitute a mutual vertical support or rest, each for the other, in case of the breakage ot any one otthe said parts. The said levers G and their coupling-links l and the central plate, I, are respectively coupled together by cylindrical keyed pins 't' t', so as to allow the said parts free lateral play, the one upon the other.

To .the central parts of each of the central plates, I, and secured thereto by an assembling-pin, i2, similar to those above described, are connected, respectively, on the opposite sides of the bolster A, a rod or draw-bar, K, and a clevis-bar, K. In the inner end of the bar K is secured a grooved sheave, K2, by means of au assembling-pin, k, on which the said sheave is allowed to freely revolve. rlhe draw-bar K is on a line with the clevis-bar K', to which it extends only a part of the vend of the lever E in the proper manner the rod K* will draw the chain or wire rope over the sheave K2 and along with it the draw-bar K toward the said sheave, thus forming and uniting the levers E and Gv into a set of oompound levers, by means of which the brakes H are applied to the wheels of the car with very great power and effect.

Having thus described myiuvention, what I claim as new, and desi re to secure by Letters Patent, is-

1. The operatiuglevers G,the links or plates I and l', and the actuating-lever draw-bars K K', combined and arranged substantially as described.

2. The operating-levers G, actuated by a single actuating'levenE, through tv-he connect- In witness whereof I hereunto set my hand ing draw-rods K and K', the connecting chain in presence of two witnesses. or wire rope operating over a sheave, K2,

journaled in the free end of one of the said GILBERT LLOYD ADAMS 5 draw-rods and attached to the actuating-1e Witnesses:

ver by the draw or connecting rod K, the N. D. COUCH,

Whole combined and arranged substantially THOS. P. FOSTER,

as described. M. ALEXANDER. 

